# What the gerund can and cannot do

> id: grammar.verbs.gerund-uses · category: grammar · depth: standard · levels: B1, B2 · review: internally_reviewed

**Summary.** The gerund expresses progress (está comiendo), manner (aprendí practicando), and simultaneity — but never works as an adjective or after prepositions.

Legitimate jobs: progressive with estar/seguir/ir/llevar, manner and means (se fue corriendo, lo resolví hablando), and backgrounded simultaneous action (caminando por el centro, vi a Marta).

Off-limits (unlike English -ing): after prepositions (antes de salir, not *saliendo), as a noun (nadar es sano), and as a noun-modifying adjective — 'a flying object' is un objeto volador or que vuela, not *volando.

A good test: if you can replace the English -ing with 'while/by …', the Spanish gerund fits; if it names a thing or modifies a noun, it does not. So 'I like swimming' is me gusta nadar (infinitive) and 'running water' is agua corriente (adjective), but 'I learned by listening' is aprendí escuchando.

## Examples
- Se fue corriendo. — He left running / he ran off.
- El hombre que canta es mi vecino. — The singing man is my neighbor. *(Relative clause, not gerund.)*
- Aprendí escuchando, no leyendo manuales. — I learned by listening, not by reading manuals.

Related: conjugation.progressive.gerund-formation, grammar.verbs.infinitive-uses

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